函数逻辑报告 |
Source Code:lib\zlib_deflate\deftree.c |
Create Date:2022-07-27 07:56:14 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| 首页 | 函数Tree |
| 注解内核,赢得工具 | 下载SCCT | English |
函数名称：Determine the best encoding for the current block: dynamic trees, static* trees or store, and output the encoded block to the zip file. This function* returns the total compressed length for the file so far.
函数原型：ulg zlib_tr_flush_block(deflate_state *s, char *buf, ulg stored_len, int eof)
返回类型：ulg
参数：
| 类型 | 参数 | 名称 |
|---|---|---|
| deflate_state * | s | |
| char * | buf | put block, or NULL if too old |
| ulg | stored_len | length of input block |
| int | eof | rue if this is the last block for a file |
| 864 | max_blindex等于0 |
| 867 | 如果compression level (1..9) 大于0则 |
| 870 | 如果UNKNOWN, BINARY or ASCII 恒等于Z_UNKNOWN则set_data_type(s) |
| 873 | build_tree(s, (tree_desc * )( & (Huffman tree for bit lengths ))) |
| 877 | build_tree(s, (tree_desc * )( & (desc. for distance tree ))) |
| 887 | max_blindex等于build_bl_tree(s) |
| 890 | opt_lenb等于 length of current block with optimal trees 加3加7右移3位 |
| 891 | static_lenb等于 length of current block with static trees 加3加7右移3位 |
| 897 | 如果static_lenb小于等于opt_lenb则opt_lenb等于static_lenb |
| 899 | 否则 |
| 901 | opt_lenb等于static_lenb等于length of input block 加5 |
| 926 | 如果length of input block 加4小于等于opt_lenb且put block, or NULL if too old 不等于0则 |
| 940 | 否则如果static_lenb恒等于opt_lenb则 |
| 945 | 否则 |
| 947 | send_all_trees(s, largest code with non zero frequency + 1, largest code with non zero frequency + 1, max_blindex + 1) |
| 949 | compress_block(s, (ct_data * )literal and length tree , (ct_data * )dyn_dtree) |
| 953 | init_block(s) |